CN105914305A - Flexible battery - Google Patents
Flexible battery Download PDFInfo
- Publication number
- CN105914305A CN105914305A CN201610034326.5A CN201610034326A CN105914305A CN 105914305 A CN105914305 A CN 105914305A CN 201610034326 A CN201610034326 A CN 201610034326A CN 105914305 A CN105914305 A CN 105914305A
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- China
- Prior art keywords
- laminate film
- projection
- battery
- crest line
- wave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000005001 laminate film Substances 0.000 claims abstract description 113
- 239000003792 electrolyte Substances 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 36
- 208000037656 Respiratory Sounds Diseases 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 238000003475 lamination Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 210000001215 vagina Anatomy 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The invention provides a thin pouch battery, which is used as a power source of a portable electronic apparatus, a portable electronic terminal, or the like. The thin pouch battery has the flexibility of preventing wrinkling or cracking in the laminate film, even when thin pouch battery is bent in whatever the upper side direction or the lower side direction, and thus it is possible to improve quality and reliability. The thin pouch battery has protrusions, into which an electrode group is inserted, formed in both a laminate film 101 on the upper side and a laminate film102 on the lower side. Then, concentrically concave and convex wave shapes (concentric crest ridges or trough furrows 111) are formed on the top surface of each of the protrusions 115, 116 such that the protrusion can extend or shrink in any direction, or the protrusion has a side surface 113 that is gradually inclined and a wave shape is formed on the side surface 113 of the protrusion.
Description
Technical field
The present invention relates to flexible battery.
Background technology
As the portable electric appts of compact, portable electronics such as smart mobile phone or Wristwatch-type terminals
The power source of terminal, uses slim pouch type battery.
Slim pouch type battery is two lamellas at thickness about the 0.1nm being made up of metal forming or resin bed
Close between thin film, wrap into the positive pole by lamellar and negative pole and electrode group that dividing plate is constituted, and be filled with
The structure of liquid, gel or solid electrolyte.Laminate film be selected in impact of causing because of external force etc. and
In the case of deformation damage or the life-span of laminate film self or variations in temperature cause deterioration etc. time,
The material that electrolyte therein will not spill.
At present, portable electric appts is taken with oneself mostly, such as, has the most curved with wrist
Bent portable electric appts, its battery also to bend with its shape in consistent manner.
For corresponding this battery, it is desirable to the further slimming of battery or flexibility.
Existing slim pouch type battery is by the firm and laminate film shape on the whole of shortage retractility
Corrugate portion, improves the structure of the overall flexibility (flexibility) of laminate film (referring for example to patent literary composition
Offer 1).
Figure 14 is the figure of the existing slim pouch type battery representing that patent documentation 1 is recorded.
In fig. 14, at laminate film 201 and the laminate film 202 of downside configuration of upside configuration
Between, airtight have positive pole and negative pole and electrolyte.In each surface of laminate film 201,202, shape
Become the wave 203 that an oriented direction extends always and arranges in parallel to each other, thus improve lamination
The flexibility of thin film 201,202.
Figure 15 represents the figure of the manufacturing procedure figure of slim pouch type battery.
As shown in Figure 15 (A), on the laminate film of slim pouch type battery, with parallel and at equal intervals
Mode form continuous print wave always.Then, on the basis of bending position 206, such as Figure 15
(B) shown in laminate film is turned back, the laminate film after bending inserts by positive pole, negative pole,
The electrode group 207 that dividing plate and electrolyte etc. are constituted.Afterwards, three limits beyond fold back portion are engaged,
Obtain slim pouch type battery.
Figure 16 represents slim pouch type battery applying external force, makes the state diagram that slim pouch type battery bends.
As shown in Figure 16 (A), if the waveform to the surface being formed at laminate film 201,201
Shape 203 applies external force from vertical direction 208, then become the shape of bending as shown in Figure 16 (B).
Now, due to the laminate film 201 of upside and the radius being bent to form of the laminate film 202 of downside
Difference, so producing the difference of girth (length of run) during bending.
That is, comparing the length of the laminate film before bending, the length (girth) after bending is elongated,
Become the length (girth) of the laminate film after the length ＜ bending of the laminate film before bending
Relation.
The difference of this girth shows as gauffer or the crackle on laminate film surface.The size of gauffer or shape root
Changing according to the state of bending, quality, because of the leakage etc. of electrolyte, is caused great impact by crackle.
Figure 17 is the figure of the generation mechanism representing gauffer.
As shown in Figure 17 (A), if the laminate film 201 in upside and the laminate film 202 of downside
Between sandwich electrode group, then form the projection 209 of the amount of thickness of electrode group.By projection 209 now
The length of end face be set to L1.
Then, as shown in Figure 17 (B), if making laminate film 201,202 bend, then its with
Deform on the basis of the laminate film 202 of the downside of internal side diameter.Radius due to the end face of projection 209
R2 is bigger than the radius R1 of the laminate film 202 of downside, therefore, and the end face of the projection 209 after bending
Perimeter L 2 bigger than length L1 before bending (L2 ＞ L1).
That is, the laminate film 201 making upside is needed to extend when bending.But, due to laminate film
201,202 it is difficult to elongation, so the laminate film 202 of downside is to the Direction distortion shunk.Downside
Laminate film 202 shrinks the amount (L2-L1) of the length difference of L1 and L2, this laminate film 201,
The surface exhibits of 202 is gauffer or crackle.
Figure 18 is to represent the existing bending that the surface at laminate film 201,202 is formed with wave
The figure of state.
As shown in Figure 18 (B), if the girth of the end face of the projection 209 after bending is set to L4,
As shown in Figure 18 (A), then set wave 210, so that the week of the end face of the projection 209 before Wan Qu
Long L3 is more than L4 (L3 >=L4).If bent as shown in Figure 18 (B), then in upside
Act on the power of elongation on laminate film 201, but extended by the ripple 210 of the end face of projection 209 and incite somebody to action
Elongation (L2-L1 in Figure 17) absorbs.As a result, it is possible to suppression laminate film 201,
Gauffer on the surface of 202 or the generation of crackle.
Prior art literature
Patent documentation
Patent documentation 1:(Japan) JP 2000-173559 publication
Invent problem to be solved
But, in above-mentioned existing structure, as shown in Figure 19 (A), apply from the rib with ripple
The external force in the direction that line is parallel, in the case of laminate film is with state bending as Figure 19 (B),
Ripple can not extend.As a result of which it is, there is the problem producing gauffer or crackle etc.Its reason is because,
As shown in figure 20, although being formed with the laminate film of wave relative to the crest line of ripple in vertical side
Protrude upward, but not elongation in a parallel direction.It addition, hanging down at the crest line relative to ripple
On direction beyond Zhi, i.e. incline direction, laminate film does not the most extend, therefore, even if from the party
Bend to applying external force, also can produce gauffer or crackle.
Figure 21 represents the skeleton diagram of the upwards laminate film of the state of lateral bend by external force.
As shown in the state of Figure 21 (A)～Figure 21 (B) upwards in the case of lateral bend,
On the basis of the laminate film 202 of downside, the ripple 210 of the end face of projection is to the direction effect shunk.
Although this amount of contraction is by narrowing the spacing of wave, can absorb to a certain extent, if but received
Contracting quantitative change is big, cannot be performed for more than the contraction of above-mentioned degree, can produce gauffer or crackle.
Figure 22 represents the state diagram making laminate film bend.The side 211 of projection is vertically to erect
State bends, therefore, as shown in figure 23, and can be by strong flexible power.The top of projection side
The power that side, face 212 is extended, the power that the following side 213 of projection side is compressed.Laminate film
The power of elongation can not be followed, as a result of which it is, will crack in the side 211 of projection.
Then, Figure 24 represents the most not projection of processing storage electrode on laminate film, but will
State diagram during four limit sealing engagements.If the laminate film 201 in plane upside and plane
Downside laminate film 202 between sandwich electrode group 207 and by four limit sealing engagements, because lamination is thin
On film produce electrode group incorporating section step and four corners produce gauffer 214.Engaging sealing can
Reduce because of this gauffer by property.
Summary of the invention
The present invention is to solve above-mentioned existing problem, its object is to, it is provided that no matter one is from which
Upwards side, direction to or the bending of direction, downside, all without producing gauffer or crackle on laminate film
Battery.
For solving the technical scheme of problem
To achieve these goals, the battery of the present invention is according to the electrode group of the part inserting electrode group
Shape, is pre-formed projection on laminate film, afterwards, forms concave or convex shape on laminate film,
So that laminate film to which direction can also extend.In such a state battery is applied external force,
Carry out in all directions deforming, bending.
Invention effect
As it has been described above, the battery of the present invention is to be formed with projection on laminate film, and at laminate film
On be formed with the battery of concave or convex shape, apply external force and in the case of deforming, bending, at lamination
Also will not produce gauffer or crackle on thin film, it is possible to the problems such as the leakage of elimination electrolyte, can improve
Reliability.
Accompanying drawing explanation
Fig. 1 be make slim pouch type battery in the lateral direction, fore-and-aft direction bending state diagram；
Fig. 2 is the concavo-convex waveform of the end face formation of the projection at laminate film of embodiment of the present invention 1
The crest line at the peak of shape or the crest line of paddy become the figure of stair-stepping slim pouch type battery；
Fig. 3 is the figure of the manufacturing procedure picture of the slim pouch type battery representing the present invention；
Fig. 4 is the concavo-convex waveform of the end face formation of the projection at laminate film of embodiment of the present invention 2
The crest line at the peak of shape or the crest line of paddy become the figure of the slim pouch type battery of roughness；
Fig. 5 is the concavo-convex waveform of the end face formation of the projection at laminate film of embodiment of the present invention 3
The crest line at the peak of shape or the crest line of paddy, the slim pouch type battery angled with the side of projection
Figure；
Fig. 6 is the concavo-convex waveform of the end face formation of the projection at laminate film of embodiment of the present invention 4
The crest line at the peak of shape or the crest line of paddy become the figure of the slim pouch type battery of concentric circles；
Fig. 7 is that the end face in the projection of laminate film of embodiment of the present invention 5 is formed with convex form
The figure of slim pouch type battery；
Fig. 8 is the slim bag-shaped of the side inclination of the projection making laminate film of embodiment of the present invention 6
The profile of battery；
Fig. 9 is that the side in the projection of laminate film of embodiment of the present invention 7 is formed with wave
The figure of slim pouch type battery；
Figure 10 is the local state figure during projection edgewise bend making the present invention；
Figure 11 is to make the pouch type battery being provided with projection on the laminate film of upside to upside or downside
The state diagram of bending；
Figure 12 is the bag being provided with projection on the laminate film of the upper side and lower side two side making the present invention
Shape battery is to upside or the state diagram of lower lateral bend；
Figure 13 is the figure of the slim pouch type battery multiple embodiments of the present invention being combined into；
Figure 14 is the figure of the existing slim pouch type battery with flexibility representing that patent documentation 1 is recorded；
Figure 15 is the processing work of the existing slim pouch type battery with flexibility that patent documentation 1 is recorded
Sequence figure；
Figure 16 is that the existing slim pouch type battery with flexibility is applied shape when external force makes it bend
State figure；
Figure 17 is the explanation not forming the gauffer generation mechanism in the case of wave on laminate film
Figure；
Figure 18 is the existing methodical case of bending figure being formed with wave on laminate film；
Shape when Figure 19 is to apply the external force from the direction parallel with the crest line of ripple on laminate film
State figure；
Figure 20 is to the vertical direction of the crest line relative to ripple and the elongation of parallel direction by laminate film
State diagram；
Figure 21 is the state diagram making laminate film upwards lateral bend；
Figure 22 is the state diagram making laminate film bend；
Local state figure when Figure 23 is to make projection edgewise bend；
Figure 24 is the projection of the most not processing storage electrode group on laminate film but is engaged on four limits
Time state diagram.
Symbol description
101,102,201,202: laminate film
111: the crest line at the peak of concentric circles or the crest line of paddy
104,113,114: the side of projection
103,115,116,209: projection
Detailed description of the invention
Below, referring to the drawings, embodiments of the present invention are illustrated.
Fig. 1 represent slim pouch type battery in the lateral direction or fore-and-aft direction bending state diagram.In bending
Time, the laminate film 102 in downside and the projection for receiving electrode of the laminate film 101 of upside
The top part of 103, produces the difference of the expansion girth after bending, therefore produces on the surface of laminate film
Gauffer or crackle.
Therefore, in the present invention, it is provided that a kind of battery, it is characterized by, laminate film is formed recessed
Convex wave, and the crest line of the crest line at the peak of its ripple or paddy bend be continuously connected or point
Dissipate and exist so that laminate film can extend to all of direction, even if bending to all of direction,
Also gauffer or crackle will not be produced.
(embodiment 1)
Fig. 2 represents what the crest line at the peak of the concavo-convex wave formed on laminate film or the crest line of paddy bent
State.The crest line at the peak of the wave formed on laminate film or the crest line 105 of paddy, with projection 103
The side 106 of left and right directions parallel and continuous with certain length, change angle afterwards, with front and back
The side 107 in direction is parallel and continuous with certain length.
The crest line at the peak of wave or the crest line 105 of paddy are the left and right directions sides 106 with projection 103
The most parallel with front and back sides 107 and stepped continuous print state.So, the peak of wave
The crest line 105 of crest line or paddy exists parallel with the left and right side 106 of projection 103 and front and back sides 107
State, the projection 103 of upside laminate film top part left and right directions forwards, backwards elongation, therefore,
Even if by battery, in the lateral direction or fore-and-aft direction bends, and also will not produce gauffer or crackle.
Fig. 3 represents the manufacturing procedure picture of the battery of the present invention.First, with the laminate film 101 in upside
In can by storage electrode group 108 in the way of, according to electrode group 108 size formed projection 103.Connect
, the end face in projection 103 forms concavo-convex wave 105.Then, at the laminate film 101 of upside
And between the laminate film 102 of downside, sandwich electrode group 108, and four limits are sealed.
In this manufacturing process, owing to being the projection forming storage electrode group before being sealed on four limits
103, it is possible to prevent when existing sealing, the issuable gauffer in corner.Additionally,
In the present embodiment, after forming projection 103, wave 105 is formed but it also may shape simultaneously
Become projection 103 and wave.This manufacturing process is applicable to following all embodiments.
(embodiment 2)
Fig. 4 represents what the crest line at the peak of the concavo-convex wave formed on laminate film or the crest line of paddy bent
State.
The crest line at the peak of the wave of present embodiment or the crest line 109 of paddy, with the left and right of projection 103
The parallel situation in the side 106 in direction and the side 107 of fore-and-aft direction is identical with embodiment 1, but
In the present embodiment, the crest line at peak and the crest line of paddy concavo-convex continuous on this point different.Therefore,
The top part left and right directions forwards, backwards elongation of the projection 103 of upside laminate film, even if making battery to the left
Right direction or fore-and-aft direction bending, also will not produce gauffer or crackle.
(embodiment 3)
Fig. 5 represents what the crest line at the peak of the concavo-convex wave formed on laminate film or the crest line of paddy bent
State.
The crest line at the peak of the wave of present embodiment or the crest line 110 of paddy bend while continuously,
This is identical with embodiment 1 and embodiment 2, but in the present embodiment, in crest line or the paddy at peak
The side 106,107 of crest line and projection formed certain angle and continuously bending on this point the most not
With.Therefore, the left and right elongation the most forwards, backwards of the top part of the projection 103 of upside laminate film, and
Also extending to tilted direction, even if making battery fore-and-aft direction to the left and right or tilted direction bending, also will not produce
Gauffer or crackle.
(embodiment 4)
Fig. 6 represents that the crest line at peak of the concavo-convex wave formed on laminate film or the crest line of paddy become continuously
The state of toroidal.
The crest line at the peak of multiple wave or the crest line of paddy become the concentric toroidal (peak of concentric circles
Crest line or the crest line 111 of paddy), its toroidal disperse on laminate film exist.Due to wave
The crest line at peak or the crest line of paddy are toroidal, therefore, and the top part of the projection 103 of upside laminate film
Extend to all of direction, even if making battery bend to all of direction, also will not produce gauffer or splitting
Stricture of vagina.In the present embodiment, illustrate crest line with toroidal continuous print example, but as deformation, also
Can be continuous with the polygon such as triangle or square shape.
(embodiment 5)
Fig. 7 represents the mode being formed with convex form on laminate film.It is characterized by, at laminate film
On be formed with convex form 112, and the dispersion of multiple convex form exists.
In the present embodiment, the top part of the projection 103 of upside laminate film is stretched to all of direction
Long, even if making battery bend to all of direction, gauffer or crackle also will not be produced.Additionally, at this
In embodiment, be particularly formed with convex form but it also may be concave shape or concaveconvex shape dispersion deposit
Mode.
(embodiment 6)
Fig. 8 represents the mode that the side of the projection making laminate film tilts.
When making battery bend, the laminate film 101 of the upside in Fig. 8 (A) be inserted with electrode
The side 104 of the projection of group 108, due to by big tensile stress, so producing gauffer or splitting
Stricture of vagina.
Then, as shown in Fig. 8 (B), by making the side of the projection of the laminate film 101 of upside
113 tilt, and can relax this tensile stress.This is because, although the side of the projection in Fig. 8 (A)
The height in face 104 is identical with the height of the side 113 of the projection in Fig. 8 (B), but by arranging
Become inclined-plane, the length till the end face of projection 103 can be extended.As the standard of this length,
Preferably more than 1.1 times of height, thus, it is desirable that the bevel angle D of the side 113 of projection
It it is less than 60 degree.So, by making the side 113 of projection tilt, dashing forward when can relax bending
The gauffer of the side generation risen or crackle.
(embodiment 7)
Fig. 9 represents that the side in the projection of laminate film is formed with the mode of wave.
As shown in Figure 10, by forming wave in advance in the side of projection, this ripple extends, permissible
Prevent the generation of gauffer or crackle.Then, as it is shown in figure 9, with the projection 103 at laminate film 101
The wave that formed of end face same, also form wave in the side 114 of projection.
Now, the wave of the side 114 of projection is formed after processing projection 103.According to this
Method, as it is shown on figure 3, owing to being after forming projection, form wave in the side of projection,
Therefore, the wave of side will not be made a mess of.
(embodiment 8)
Figure 11 represents setting projection on the laminate film of upside, and makes it to upside in this condition
The state of bending or the state of downward lateral bend.It addition, Figure 12 represents the laminate film in upside
Set projection with these both sides of laminate film of downside, and make the shape of its upwards lateral bend in this condition
The state of state or downwards lateral bend.
As shown in Figure 11 (A), after being only provided with projection 103 on the laminate film 101 of upside,
As shown in Figure 11 (B), if upwards lateral bend, it is formed at the wave of end face of projection 103 then
Being applied tensile stress, ripple extends.As a result of which it is, battery bends non-wrinkledly.
On the other hand, as shown in Figure 11 (C), if lateral bend downwards, it is formed at the end face of projection
Wave be then applied compression stress, ripple shrinks, and thus, battery bends non-wrinkledly.But,
If the height H of projection 103 uprises, the most upwards during lateral bend ripple elongation degree or to downside
Ripple shrinkage degree during bending increases, it is impossible to follows the flexible of ripple, thus can produce gauffer.
In the present invention, as shown in Figure 12 (A), the laminate film 101 of upside arranges projection
115, and projection 116 is set on the laminate film 102 of downside.Due to the lamination in the upper side and lower side
Projection is set on thin film, so the height of projection is relative to the height H shown in Figure 11 (A), permissible
It is respectively set as the half i.e. height of H/2.
If downward lateral bend as shown in Figure 12 (B) in this condition, then at the laminate film of upside
The ripple formed in the projection 115 of 101 is stretched, in the projection 116 of the laminate film 102 of downside
The ripple formed is compressed.
On the other hand, as shown in Figure 12 (C), contrary with upwards lateral bend, the lamination in upside is thin
The ripple formed in the projection 115 of film 101 is compressed, in the projection 116 of the laminate film 102 of downside
The ripple of upper formation is stretched.
If the most only arrange projection 103 in side, then the end face of projection 103 is to downside
During bending, simply elongation, simply shrinks when upwards lateral bend, but its flexible degree is bigger.But,
As shown in Figure 12 (A), if arranging projection in both sides, although to the bending of downside and to upside
Bending is all the end face elongation of the projection of side, and the end face of the projection of opposite side shrinks, but it stretches
Degree less.Therefore, in the case of the height of projection is higher, as shown in Figure 12 (A), logical
Crossing and set projection in both sides, the generation for gauffer during bending is highly effective.
In the above-described embodiment, for gauffer during bending or crackle, by by multiple differences
Mode combine, further effect can be obtained.
As an example, in fig. 13, thin at the laminate film 101 of upside and the lamination of downside
Projection 115,116 is set respectively on film 102, and at the end face of its projection 115,116 with to which
The mode can also stretched in direction forms the concavo-convex wave (crest line at the peak of concentric circles of concentric circles
Or the crest line 111 of paddy).It addition, Figure 13 represents, and the side 113 of projection is set to mild inclined-plane,
And state diagram when being provided with wave.Need the behaviour in service according to battery or require that specification selects
The shape of optimal laminate film.
Industrial applicability
The battery of the present invention can apply to slim pouch type battery, and this slim pouch type battery is used as in external force
Act on the power of small-sized portable electric appts, the portable electronic terminal etc. that can bend or deform down
Source.
Claims (8)
1. a battery, it is characterised in that
In the laminate film sandwiching the electrode group comprising electrode, dividing plate and electrolyte,
Described laminate film sandwiches the end face of the projection of described electrode group, from its end to the other end
Portion is formed with the multiple concavo-convex of non-rectilinear connection.
Battery the most according to claim 1, wherein,
In described laminate film, its cross section is wave, and the crest line on the summit of this crest and paddy
Crest line bends while continuously.
Battery the most according to claim 1, wherein,
In described laminate film, its cross section is wave, and the crest line on the summit of this crest and paddy
The continuous circular shape of crest line, and the scattered existence of wavelength-division of this toroidal.
Battery the most according to claim 1, wherein,
In described laminate film, its partial cross section is concave or convex shape, and the dispersion of this concave or convex shape
Exist.
Battery the most according to claim 1, wherein,
In described laminate film, the side surface part of described projection is set as the inclined plane shape of less than 60 degree.
Battery the most according to claim 5, wherein,
In described laminate film, the side surface part in described projection is formed with concaveconvex shape or wave.
Battery the most according to claim 2, wherein,
In described laminate film, enter after forming described projection or while forming described projection
Row processing.
Battery the most according to claim 1, wherein,
In described laminate film, to a laminate film and this two side of another the most opposed laminate film
Set the shape of described projection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015033532A JP6484800B2 (en) | 2015-02-24 | 2015-02-24 | Flexible battery |
| JP2015-033532 | 2015-02-24 |
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| Publication Number | Publication Date |
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| CN105914305A true CN105914305A (en) | 2016-08-31 |
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| CN201610034326.5A Pending CN105914305A (en) | 2015-02-24 | 2016-01-19 | Flexible battery |
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| Country | Link |
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| US (1) | US10096803B2 (en) |
| JP (1) | JP6484800B2 (en) |
| CN (1) | CN105914305A (en) |
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Also Published As
| Publication number | Publication date |
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| US10096803B2 (en) | 2018-10-09 |
| JP6484800B2 (en) | 2019-03-20 |
| JP2016157549A (en) | 2016-09-01 |
| US20160248053A1 (en) | 2016-08-25 |
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